Data exhibitor



Aug. 20, 1946. G. MUNRO DATA EXHIB TOR Filed Jan. 6, 1945 'I 2 Sheets-Sheet l :IiIIIIIL Mnl... HHH.. HHHVIII I. u MH..

Garz/on Mmm z INVENToR l av 7 i 4 ATTORNEY Aug. 20, i946. G. MUNRO DATA EXHIBITOR Filed Jan. e, 194s. 2 sheets-snaai 2 .N m ma@ .www S qu@ WM- WI mm Gordan Munro.

INVENTOR ATTORNEY Patented Aug. 20, 1946 DATA EXHIBITOR Gordon Munro, Bremerton, Wash.

Application January .6, 1943, serial No. 471,457

(o1. Lio--smA (Granted under the act of March 3, 1883, as

3 Claims.

amended April 30, 1928; 37|) 0. G. 757) This invention relates to a data exhibitor and has for an object to provide an improved data exhibitor, wherein it is desired to have a great deal of data readily accessible for selection of a particular part of such data and for placing the selected data in a readily visible position and maintaining it in such readily visible position without liability of being accidentally changed.

A further object of this invention is to provide a data exhibitor wherein a, great deal of data is placed' on scrolls", which scrolls are adapted to be rotated back and forth beneath exhibitor windows and hold the particular selected data Visible through such windows while use is being made thereof, without liability of the scrolls being accidentally rotated to thus change the selected data for some erroneous data.

.Still .a further object of this invention is toV provide a means for selecting desired data from ascroll'whose ends are mounted on spoolsor rotation in either direction and for maintaining such selected data invisible position without liability of having the scrolls accidentally rotated.

Still a vfurther object of this invention is to provide a means for selecting data from a plurality of data scrolls'through windows of a single exhibitor member and maintaining such plurality of scrolls against accidental movement after the selected' data has been made visible through the windows. f l

Withlthe foregoing andother objects in View, the invention consists in the construction, cornbination and arrangement of parts hereinafter described and illustratedl in the drawings, in which:

Fig. lisan elevational view of -the data exhibitor of this invention.

Fig. 2 is a section on line 2--2 of Fig. 1.

Fig. 3 is a partly end and partly phantom View.

Figs. 4 and 5 are edge views of one of the scroll pressure plates on a reduced scale; and

Fig. 6 is a top plan View of the window chart with selected data visible therethrough.

There is shown at I the data exhibitor of this invention made in the form of a Abox body II. This box body I I contains a pair of blocks I2 and I3 separated from each other by a metal insert I 4 whose ends are supported in slits formed in the ends I5 and I6 of the box body II. Extending through sides I1 and I8 of the box body II are three rods 20, 2| and 22, these rods extending through the metal insert I 4. The blocks I2 and I3 are each provided with cylindrical recesses therein of an appropriate diameter to receive two spools on each rod, each spool extending through suitable apertures in one of the sides I'I or I8 of the box body I I. The four spools on the two ends of rods 20 and 22 are substantially identical and each spool is formed in the shape of a hollow cylinder, as at:23, and terminates in an enlarged bearing 24 journalled in the aperture in the box side I1. Beneath the bearing 24 the spool 23 becomes an enlarged handle knob 25. These spools 23 are held on the rods 20 and 22 by having counterbored openings through the knob ends within which are placed a spring 26 vand a washer 21 held in position by a cotter pin 28 extending through the end of the rod 20. Each of the spools 23 being identical, two of the spools 23 are assembled on thefrodv 2li-by merely inserting the spools over the opposite ends of the rod 20 after the rod 2|) has been placed in position through the support insert I4. The spring 26, washer 2l, and ootter pin 28 are placed in one end of the rod 20 and then the rod 2U is pushed through the other end against the action of the spring 26 to make the-other end of the rod 20 extend sulciently for its spring, washer and Cotter pin to be placed therein, the spring then serving to equalize the rod and keep its ends concealed within the spool knobs 25.

The pair of center spools 30 is somewhat smaller in diameter than the end spools 23, but its assembly and construction are they same. The scrolls 3l have their ends secured to the spools 23 and the spools are then turned in opposite directions until the scrolls are held on the spools 23 with a'portion therebetween extending over a pressure plate 32. This pressure plate 32 is provided with a pair of depending fingers 33 adapted to extend into guiding wells 34.in the blocks I2 and I3. The spools 30 on the center rod 2| are each provided with an eccentric spring member 35 thereon so that when the spool 3l] is rotated this spring 35 will, during one portion of its rotation, yieldably raise the pressure plate 32 upwardly.

As is apparent from Fig. 1, the supporting insert I4 is somewhat to one side of the center of the box .body I I, because in the particular example illustrated the two scrolls 3| happen to be of diierent width, as a result of which the spools on one side are longer than the spools on the other side.

A window chart 35, shown in Fig. 6, is then placed over the scrolls 3|, this window chart 36 being provided with any suitable data 39 thereon, as shown, together with any suitable number of window openings 31 and 38 thereon adapted to cooperate with the data 40 and 4| on the scrolls 3|.

Above this window chart 36 there is placed a glass 42, this glass 42 being supported on ledges 43 mounted over the outer ends of the blocks I2 and I3, While the other two sides of the glass are supported by ledges 44 formed on the outer edges of the blocks l2 and I3. A frame cover 45 is then secured over the glass 42 by suitably located screws 46 to hold the glass 42 securely in position.

In operation, the scrolls 3l with their selected data thereon have their ends secured on the appro-priate spools 23 and extend over the pressure plate 32 and beneath the window chart 36 and glass 42 thereabove. By selecting any one of the knobs 25 the scrolls may be rolled in the appropriate direction to make the desired data on the scroll visible through the appropriate window opening on the chart 3S. After the desired data on the scroll has been brought into proper position, the spools 30 are rotated by means of their knobs 25 until the spring 35 presses against the bottom of the plate 32, thereby yieldably forcing the pressure plate 32 up against the scroll 3l, the chart 36, and the glass 42. When in this position it is not possible for the scroll to accidentally move and thus disturb the arrangement of the data visible through the Window openings.

As shown on chart 36 the data on the scrolls and th'e chart is such as is appropriate for making a selection of tap drills. When the workman desires to make a particular tap drill, he places the appropriate data in position for exhibition to him as just described, thus yieldably holding the scrolls against accidental movement While he is Working on that particular size of tap drill. When he desires to make a diierent size h'e first rotates the spool 30 until the spring 35 is moved away from contact with the bottom of the pressure plate 32, permitting the pressure plate 32 to drop and cease to press on the scroll 3l. The scroll 3l may then be rotated in either direction by means of its spool and until the new selected data is visible, and then the spool 23 is again rotated to lock the particular data Vin the exhibitor position. This yieldably holding of the data in position prevents the possibiilty of error through accidental change of the visible data While the Workman is in the midst of his operations. Similarly, any other data may be placed on the scrolls and the window chart approximate to any subject matter and operated in a similar manner.

Other modifications and changes in the number and proportions of the parts may be made by those skilled in the art Without departing from the nature of this invention Within the scope of what is hereinafter claimed.

'I'he invention described herein may be manufactured and used by or for the Government of 4 the United States of America for governmental purposes Without the payment of any royalties thereon or therefor.

Having thus set forth and disclosed the nature of this invention, what is claimed is:

1. A data exhibitor comprising a window chart, a scroll movable beneath said Window chart, said chart and said scroll having appropriate cooperating data thereon, means for moving said scroll so as to make selected data on said scroll visible through said Window chart, means for holding said scroll against movement when the selected scroll data is in appropriate position, said holding means including a pressure plate beneath said scroll, yieldable means including an eccentric roller mounted beneath said pressure plate, said eccentric roller comprising a cylindrical spool, and an eccentrically mounted spring thereon.

2. A data exhibitor comprising a window chart with data thereon, scrolls movable beneath said chart, said chart and said scrolls having appropriate cooperating data thereon, means for moving and tensioning said scrolls so as to make selected data on said scrolls visible and legible through said Window chart when said scroll is stationary or in motion, said means for moving and tensioning scrolls including spools mounted on shaft rods, a thin insert sheet supporting said rods, retractible spring means axially forcing said spools together against said insert sheet, said insert sheet braking any back lash or slipping of spools thus keeping the scrolls taut when stationary or in motion, said braking and tensioning force being caused by friction between spool ends and insert sheet, said braking action being released by pulling said spools axially away from said insert sheet While rotating the same.

3. A data exhibitor comprising a Window chart, a scroll movable beneath said chart, said chart and said scroll having appropriate cooperating data thereon, means for moving and tensioning said scroll so as to make selected data on said scroll visible and legible through said Window chart when said scroll is stationary or in motion, means for holding said scroll against movement when the selected scroll data are in appropriate position, said holding means including a pressure plate beneath said scroll, yieldable means for holding said pressure plate against said scroll, and retractible means for holding said yieldable means against said pressure plate, said retractible means including an eccentric roller mounted beneath said pressure plate, said eccentric roller comprising a cylindrical spool and an eccentrieally mounted spring thereon.

GORDON MUNRO. 

